Question

The density of air 1.3kg/m-3 find the mass of air in a room measuring 8m* 5m*4m​

Answer 1

Answer:

280 kg

Explanation:

density = 1.3 kg/m^3

volume = 8x5x4 =160m^3

density = mass/vol

1.3=M/160

M = 1.3x 160

m = 280kg

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Answer 2

$\huge\mathfrak\red{ANSWER}$

208KG

Explanation:

IT IS GIVEN THAT--->>>>

DENSITY OF AIR =1.3KG/M^3

DIMENSIONS OF ROOM = 8×5×4

MASS OF AIR IN ROOM = ?

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NOW FOR AN OBJECT IT'S DENSITY IS THE RATIO OF IT'S MASS TO IT'S VOLUME.

THUS WE CAN SAY DENSITY OF AIR = MASS OF AIR / VOLUME OF AIR IB ROOM.

NOW, VOLUME OF AIR IN ROOM = L×B×H

= 8×5×4 = 160m^3

THEREFORE ----->>>

$1.3 = mass \div 160$

$mass = 160 \times 1.3$

$mass = 208kg$

THEREFORE MASS OF AIR IN ROOM IS 208KG.

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BY SCIVIBHANSHU

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